CN87211735U - Sm zinc sheet for grinding astigmatic spectacle-lenses - Google Patents
Sm zinc sheet for grinding astigmatic spectacle-lenses Download PDFInfo
- Publication number
- CN87211735U CN87211735U CN 87211735 CN87211735U CN87211735U CN 87211735 U CN87211735 U CN 87211735U CN 87211735 CN87211735 CN 87211735 CN 87211735 U CN87211735 U CN 87211735U CN 87211735 U CN87211735 U CN 87211735U
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- zinc
- grinding
- sheet
- lenses
- metal sheet
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Abstract
The utility model relates to an SM zinc sheet for grinding astigmatic spectacle-lenses. The SM zinc sheet adds trace elements, such as copper, iron, aluminum and cadmium into common pure zinc, melts the pure zinc with the trace elements, and cold rolls to become a zinc alloy sheet. One side of the zinc sheet is coated with adhesive. One layer of kraft paper is glued on the surface of the adhesive to seal, and blanking dies are used to make the zinc sheet punched forming once. The SM zinc which is punch forming is stuck to the surface of a grinding tool, and is made to compound with the surface of the grinding tool uniformly. The grinding agent is added to grind spectacle-lenses. When the zinc sheet is ground to definite thickness, a piece of new zinc sheet is changed. The use of the SM zinc sheet omits the step of dressing the grinding tool, the service life of the grinding tool is extended, and the precision of the spectacle lenses grinded can not be reduced.
Description
The lap tool field that belongs to the processing optical lens.
Astigmatic lenses is to grind cylinder to add two overlapping forming of curved surface of sphere on the optical glass plane, and the processing of grinding the overlapping lap tool of such two curved surfaces is the comparison difficulty.This lap tool is once after processing, grinding technics in the past is directly to add grinding agent and eyeglass to grind on the lap tool surface, like this in the process of grinding lap tool also in continuous wearing and tearing, when wear extent is big, just certainly will cause the number of degrees error of eyeglass, so just must redress lap tool, could continue to use.This grinding technics is too big to the wearing and tearing of lap tool, the maintenance cost height, and the efficient of Yan Moing is very low simultaneously, and eyeglass machining accuracy error is big.
In recent years, from the milling apparatus of external import, be on the lap tool that processes, to be stained with a slice kirsite sheet, because zinc metal sheet is soft, than book, under certain pressure effect, can be bonded at it on the surface of lap tool, make compound in full accord of the curved surface of the lap tool of its distortion back below it.At this moment, add the grinding agent grind spectacle lens again, when zinc metal sheet may wear to certain thickness, it is taken off, it is new to change a slice again.Use this zinc metal sheet, need not repair lap tool, prolonged the life-span of lap tool greatly, Jia Gong eyeglass precision does not reduce simultaneously.At present, this zinc metal sheet all is from the import of our company of U.S. section, and this zinc metal sheet is to make with the highly purified zinc of high-quality basically, pure like this zinc metal sheet, and cost is higher, and pure zinc is too soft, and the zinc metal sheet wearing and tearing are very fast in process of lapping.In addition, U.S.'s zinc metal sheet profile is a square structure, and this structure only is applicable to the astigmatic lenses that diopter is bigger, for the less astigmatic lenses of diopter, the zone of zinc metal sheet contact will occur not having on the limit when grinding, and this will influence the quality of eyeglass.
In order to replace U.S.'s import zinc metal sheet, and improve the deficiency of this zinc metal sheet, we have developed the SM zinc metal sheet.
The SM zinc metal sheet is to add trace copper, iron, lead, cadmium in common pure zinc.Proportioning is respectively that copper is 0.0073%, and iron is 0.016%, and lead is 0.57%, and cadmium is 0.007%, and all the other account for 99.3997% for zinc, and these elements are melted in together, last cold rolling one-tenth kirsite sheet.Specification: every is 1000 * 80 * 0.27mm, proportion: 6.7 gram per centimeters
3, tensile strength 27-30kg power/millimeter
2, percentage elongation: 2-5%, hardness: HB70-90.
Adding plumbous purpose is to make zinc metal sheet more yielding than the appearance of a school, when being bonded together with the surface of lap tool, being unlikely on the limit and cracking occurs; Adding copper and iron, is in order to improve the mar proof of zinc metal sheet, because iron and copper are much harder than zinc, when abrasive material touched these elements, wear extent was more much smaller than pure zinc.
The concrete making of SM zinc metal sheet is such:
One side at cold rolling good kirsite sheet is coated with the last layer adhesive sticker, and bondline thickness is 0.15-0.18mm.Its peeling force is more than every square centimeter of 1.5kg, is stained with one deck brown paper at the glue face behind the gluing and is sealed.Pressing on the blanking die that accompanying drawing makes, a drawing of SM zinc metal sheet, when punching press, make brown paper towards on, and to note adjusting press depth, make to be unlikely in the mould die because of containing the too many zinc metal sheet surface irregularity that causes of material.
The style of SM zinc metal sheet is a garden shape structure as shown in drawings, and radius is 44.05 millimeters, and this structure is applicable to the grinding of any diopter lens.The SM zinc metal sheet has been opened eight grooves, and is relative in twos, and adjacent groove one is elongated slot (1), one is short groove (2), 14 ° at the half-open angle of elongated slot, 10 ° at the half-open angle of short groove, it is 6 millimeters garden arc that 45 ° of angle of releases between the length groove, the edge angle of eight blades (3) of formation are polished into radius.This can make cooling agent and grinding agent be easy to enter abrasive areas, has promptly improved the fineness that grinding efficiency has improved lens surface again.
The SM zinc metal sheet is applicable to grind spectacle lens on the astigmatic lenses production equipment of import, also can promote the use of on some homemade same categories of device simultaneously, to change the technology process of original backwardness, be requisite additional means in the domestic from now on astigmatic production facility.
On two bistriques of same milling apparatus, the zinc metal sheet and the SM zinc metal sheet of our company of U.S. section is bonded on these two bistriques simultaneously, through grinding checking: when this zinc metal sheet of section is ground to the 10th eyeglass.Just can not re-use, and the SM zinc metal sheet just reaches operating limit when being ground to the 14th eyeglass.
Claims (2)
1, grinds the SM zinc metal sheet that astigmatic lenses is used, it is characterized in that it is a garden shape structure, radius is 44.05 millimeters, has opened eight grooves on the shape zinc metal sheet of garden, and is relative in twos, adjacent groove one is elongated slot [1], one is short groove [2], 14 ° at the half-open angle of elongated slot, 10 ° at the half-open angle of short groove, it is 6 millimeters circular arc that 45 ° of angle of releases between the length groove, the edge angle of eight blades [3] of formation are polished into radius.
2, the SM zinc metal sheet used of grinding astigmatic lenses according to claim 1 is characterized in that its one side is coated adhesive sticker, and Jiao Mianshang is stained with one deck brown paper and is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87211735 CN87211735U (en) | 1987-08-08 | 1987-08-08 | Sm zinc sheet for grinding astigmatic spectacle-lenses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87211735 CN87211735U (en) | 1987-08-08 | 1987-08-08 | Sm zinc sheet for grinding astigmatic spectacle-lenses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87211735U true CN87211735U (en) | 1988-07-13 |
Family
ID=4826490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87211735 Withdrawn CN87211735U (en) | 1987-08-08 | 1987-08-08 | Sm zinc sheet for grinding astigmatic spectacle-lenses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87211735U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198623A (en) * | 2011-05-09 | 2011-09-28 | 苏州大学 | Elastic fine grinding device for aspherical part |
| CN107243798A (en) * | 2017-08-08 | 2017-10-13 | 福建福光光电科技有限公司 | The small raw edges polishing tool in concave surface |
-
1987
- 1987-08-08 CN CN 87211735 patent/CN87211735U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198623A (en) * | 2011-05-09 | 2011-09-28 | 苏州大学 | Elastic fine grinding device for aspherical part |
| CN107243798A (en) * | 2017-08-08 | 2017-10-13 | 福建福光光电科技有限公司 | The small raw edges polishing tool in concave surface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |